STEEL RELIEVING CONSTRUCTIONS INMINING AREAS ASTEMPORARY OR PERMANENTRAILWAY BRIDGES

• Main Author: Piotr BĘTKOWSKI
• Format: Article
• Language: English
• Published: Silesian University of Technology 2020-06-01
• Series: Transport Problems
• Subjects: relieving construction; temporaryviaduct; bridge; mining area; damage; railway line
• Online Access: http://transportproblems.polsl.pl/pl/Archiwum/2020/zeszyt2/2020t15z2_10.pdf

This article describesthree examples of bridge-type relieving constructionslocatedon railway lines inthe areas of active mining exploitation.It discusseshow to take into account mining influences and how to supporta temporary relieving construction on the railway embankment.This article discusses the incorrectsolutions and their consequences. The first example involvesthe protection oftrain traffic continuity during the replacement ofbridgespanunder an intensively used railway line. The second example shows the incorrect use of the relieving construction, leading to the relaxation of soil ground base and failure of a small brick arch railway bridge. The third example describes the use of the relieving construction as a permanent span of the railway bridgelocates in the area where mining subsidence is over 14 m. The railway line locateson the third bridge;itis a single-track line,which is the only way totransportcoal and equipment needed for operationina large underground coalmine;interruptions of railway traffic longer than 4 working days(5consecutive days)are unacceptable. This article hasbasic information abouttheeffects of mining impacts,bridge-type steel relief constructions and a theoretical introduction enabling analysis of interactions of temporary supports and embankment in mining areas. Allexamples, especially the third one, contribute to development of knowledge in the field of civil engineering and transport.